[Bug c/61240] [4.8/4.9/5 Regression] Incorrect warning "integer overflow in expression" on pointer-pointer subtraction

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61240

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |diagnostic,
                   |                            |missed-optimization
           Priority|P3                          |P2

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
So this is also a missed optimization on the C++ side?  Btw, the C++ FE warns
for me as well (on trunk).